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|c DE-627
|e rakwb
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|a eng
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| 100 |
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|a Nagel, Jennifer M
|e verfasserin
|4 aut
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| 245 |
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|a Atmospheric CO2 enrichment alters energy assimilation, investment and allocation in Xanthium strumarium
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|c 2005
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|a Text
|b txt
|2 rdacontent
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|a ohne Hilfsmittel zu benutzen
|b n
|2 rdamedia
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|b nc
|2 rdacarrier
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|a Date Completed 07.06.2005
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|a Date Revised 30.09.2020
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|a published: Print
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|a Citation Status MEDLINE
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|a Energy-use efficiency and energy assimilation, investment and allocation patterns are likely to influence plant growth responses to increasing atmospheric CO2 concentration ([CO2]). Here, we describe the influence of elevated [CO2] on energetic properties as a mechanism of growth responses in Xanthium strumarium. Individuals of X. strumarium were grown at ambient or elevated [CO2] and harvested. Total biomass and energetic construction costs (CC) of leaves, stems, roots and fruits and percentage of total biomass and energy allocated to these components were determined. Photosynthetic energy-use efficiency (PEUE) was calculated as the ratio of total energy gained via photosynthetic activity (Atotal) to leaf CC. Elevated [CO2] increased leaf Atotal, but decreased CC per unit mass of leaves and roots. Consequently, X. strumarium individuals produced more leaf and root biomass at elevated [CO2] without increasing total energy investment in these structures (CCtotal). Whole-plant biomass was associated positively with PEUE. Whole-plant construction required 16.1% less energy than modeled whole-plant energy investment had CC not responded to increased [CO2]. As a physiological mechanism affecting growth, altered energetic properties could positively influence productivity of X. strumarium, and potentially other species, at elevated [CO2]
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|a Journal Article
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|a Research Support, Non-U.S. Gov't
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| 650 |
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|a Research Support, U.S. Gov't, Non-P.H.S.
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|a Carbon Dioxide
|2 NLM
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| 650 |
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|a 142M471B3J
|2 NLM
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| 700 |
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|a Wang, Xianzhong
|e verfasserin
|4 aut
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| 700 |
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|a Lewis, James D
|e verfasserin
|4 aut
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|a Fung, Howard A
|e verfasserin
|4 aut
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|a Tissue, David T
|e verfasserin
|4 aut
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| 700 |
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|a Griffin, Kevin L
|e verfasserin
|4 aut
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| 773 |
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|i Enthalten in
|t The New phytologist
|d 1990
|g 166(2005), 2 vom: 15. Mai, Seite 513-23
|w (DE-627)NLM09818248X
|x 0028-646X
|7 nnns
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| 773 |
1 |
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|g volume:166
|g year:2005
|g number:2
|g day:15
|g month:05
|g pages:513-23
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|d 166
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